Aliceville, Alabama · field elev 150 ft
Density Altitude at George Downer (KAIV)
George Downer sits at 150 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,225 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 44.1 | −794 ft | 54.9 | −68 ft |
| February | 48.2 | −516 ft | 59.9 | 263 ft |
| March | 55.7 | −14 ft | 68.1 | 796 ft |
| April | 62.5 | 433 ft | 75.0 | 1,236 ft |
| May | 70.4 | 943 ft | 82.3 | 1,695 ft |
| June | 77.7 | 1,407 ft | 88.5 | 2,078 ft |
| July | 81.1 | 1,620 ft | 90.9 | 2,225 ft |
| August | 80.1 | 1,557 ft | 90.7 | 2,213 ft |
| September | 75.0 | 1,236 ft | 86.4 | 1,949 ft |
| October | 64.5 | 563 ft | 76.9 | 1,356 ft |
| November | 53.8 | −141 ft | 66.0 | 660 ft |
| December | 46.8 | −611 ft | 57.7 | 118 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for KAIV
DENSITY ALTITUDE
Field elevation 150 ft — the air behaves like 2,231 ft.
- PRESSURE ALT
- 151 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
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Frequently asked questions
How high does density altitude get at KAIV in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at George Downer reaches roughly 2,225 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at KAIV on an average day?
It swings with the seasons: from roughly −794 ft at the coldest month's average temperature to about 1,620 ft at the warmest month's — all from a constant field elevation of 150 ft. The month-by-month table above carries the full year.
What is the field elevation of George Downer?
150 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KAIV (ICAO) / AIV (FAA), in Aliceville, Alabama.